<?php

namespace Common\Helper;

class GuidGenerator
{

    public static function generate()
    {
        if (function_exists('com_create_guid') === true)
            return trim(com_create_guid(), '{}');

        $data = openssl_random_pseudo_bytes(16);
        $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100
        $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10
        return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
    }
}
